Gar is Brian Garlock, officially titled Video Coordinator. Gar started with Cooper in St. Louis in 2006 and has been with him for the whole ride so far, sort of Coop's right hand man. During games its up high with a wire connecting him to Steve Thomas on the bench, as George connects to Bowness. His profile is on the Lightning coaches page:
http://lightning.nhl.com/club/page.htm?id=50495